#include<stdio.h> 

#include<conio.h> 

#include<stdlib.h> 

#include<string.h> 

typedef struct { char tendiem[5]; 

float hoanhdo,tungdo; 

}diem; 

typedef struct pt{ 

diem dl; 

struct pt *ke; 

}kpt; 

float a,b; 

void *trods; 

diem ti; 

kpt *q; 

void*taodanhsach(void*trods); 

void xemdanhsach(void*trods); 

void bosungsau(void*trods,kpt *q,diem ti);

main() 

{int n; 

float a,b; 

kpt *tam; 

trods=taodanhsach(trods);printf("xem danh sach vua tao:

"); 

xemdanhsach(trods); 

/*strcpy(hsi.hodem,"Nguyen Thi"); 

strcpy(hsi.ten,"Thom"); 

hsi.tuoi=15;*/ 

printf("moi nhap ten diem:");fflush(stdin);gets(ti.tendiem); 

printf("moi nhap hoanh do");scanf("%f",&a);ti.hoanhdo=a; 

printf("moi nhap tung do");scanf("%f",&b);ti.tungdo=b; 

/*printf("bo sung sau phan tu dau tien"); 

tam=(kpt*)trods; 

q=tam;*/ 

/*printf("bo sung sau phan tu thu 2:"); 

tam=(kpt*)trods; 

q=tam->ke;*/ 

/*printf("bo sung sau phan tu cuoi cung:"); 

tam=(kpt*)trods; 

while(tam->ke!=NULL) tam=tam->ke; 

q=tam;*/  

printf("bo sung sau phan tu thu n:

");scanf("%d",&n); 

tam=(kpt*)trods; 

for(int i=1;i<n;i++) tam=tam->ke;q=tam; 

bosungsau(trods,q,ti); 

printf("

xem danh sach sau khi bo sung sau:

"); 

xemdanhsach(trods); 

getch(); 

} 

void *taodanhsach(void *trods) 

{ 

trods=NULL; 

do{ 

kpt *tam; 

printf("

Nhap diem (0de thoat):");fflush(stdin);gets(ti.tendiem);

if(strcmp(ti.tendiem,"0")) 

{printf("moi nhap hoanh do:");scanf("%f",&a);ti.hoanhdo=a; 

printf("nhap tung do: "); 

scanf("%f",&b); 

ti.tungdo=b; 

tam=(kpt *)malloc(sizeof(kpt)); 

tam->dl=ti; 

tam->ke=(kpt*)trods; 

trods=tam; 

} 

}while (strcmp(ti.tendiem,"0")); 

return trods; 

}

void xemdanhsach(void *trods) 

{ 

kpt *tam; 

tam=(kpt*)trods; 

while(tam!=NULL) 

{ 

//hsi=tam->dl; 

//printf("%s%s%d

",hsi.hodem,hsi.ten,hsi.tuoi); 

printf("%s(%2.1f,%2.1f)

",tam->dl.tendiem,tam->dl.hoanhdo,tam->dl.tungdo); 

tam=tam->ke; 

} 

getch();} 

void bosungsau(void *trods, kpt *q, diem ti) 

{ 

kpt *tam; 

tam=(kpt *)malloc(sizeof(kpt)); 

tam->dl=ti;

tam->ke=q->ke; 

q->ke=tam; 

}